Machine for lining boxes.



w. H. DOBLE & e. A. ROBINSON. MACHINE FOR LlNiNG BOXES. I

APPLICATION FILED MAR. 2|, 1916- 1 @%7,%38; Patented Nov. 20, 191?.

v 4 SHEETS-SHEET I.

INVENTURSI mm M 761%, Q-KMW W. H. DOBLE & G. A. ROBINSON.

MACHINE FOR LINING BOXES.

APPLlCATION FILED MAR. 2l. 19|6.

Patented Nov 20, 1917.

4 SHEETS-SHEET 2.

|NVENTURSI W. H. DUBLE & G. A. ROBINSON.

MACHINE FOR LINING BOXES.

APPLICATION FILED MAR. 2|, me.

1 lyng Patented Nov. 20, 1917,

4 SHEETSSHEET 3.

W. H. DOBLE & G. A. ROBINSON.

MACHINE FOR LINING BOXES.

APPLICATION FILED MAR. 21, ms.

1 2%7fi3v Patented Nov, 20, 1917.

4 SHEETSSHEET 4.

|NVENTE1RSI thef on an new @FFICE.

WILLIAM H. DOBLE AND GEORGE A. ROBINSON, OF QUINCY, MASSACHUSETTS,ASSIGN- ORSTO PNEUMATIC SCALE CORPORATION, LIMITED, OF QUINCY,MASSACHUSETTS,

A CORPORATION OF MAINE.

MACHINE FOR LINING BOXES.

1 2 1.7 238 Specification of Letters Patent.

senting the lined carton to cartons, boxes of Application filed March21, 1916. Serial No. 85,720.

To all whom it may concern:

Be it known that we, WILLIAM H. DOBLE and'GEoRcE A. ROBINSON, bothcitizens of the United States, and both residing at Quincy, county ofNorfolk, State of Massachusetts, have invented a certain new and usefulImprovement in Machines for Lming Boxes, of which the following is aspecification, reference being hadtherem to the accompanying drawings.

The invention is specially intended for application to box liningmechanism employed in connection with machines for setting up thecartons before the lining is 1nserted, then lining the carton, and thenprepackage filling mechanism, but the invention is not intended to belimited tobe used with either carton setting up mechanism or with agefilling mechanism, nor is it intended to limit the application to use inlining that class of boxes which are technically termed but it may beemployed to line any suitable form of construction to which theinvention is adapted. In the specification the word carton is intendedto include a box of any form.

The invention is an improvement on the invention shown and described inUnited States Patent No. 1,037,005, dated August 27, 1912, granted toPneumatic Scale Corporation, Limited, on the application of Hiller &Joplin; In the machine of said patent the lining blank is folded arounda reciprocable plunger which serves as a former, together, the formerthen descends into the carton with the lining blank folded around theformer and the former then withdraws, leaving the lining within the box.According to the present invention-the paper employed for the lining isa prepared wax paper. The blank is folded around the former in much thesame way as is done in the machineof said former patent, but in thedevice embodying the present invention ormer is made of metal or someother heat retaining and heat conducting material, and instead of edgestogether means are provided for heating the former, which, in turn,melts or softens the wax contained in the paper of which the liningblank is composed and pressure is applied to said'overlapping' pori-vpackbeing broken away and the pl and the overlapping edges are gluedgluing the. overlapping folded up outside of Patented Nov. 20, 191W.

tions while the wax is thus melted or softened which causes the saidoverlapping portions to firmly adhere together when the wax stiflensagain upon cooling.

The drawings illustrate one form of machine for lining boxes in themanner above mentioned, a portion of the mechanism being like that shownin said Patent No. 1,037,005.

The invention will be fully understood when taken in connection with theacc0mpanying drawings and the novel features thereof will be pointed outand clearly defined in the claims at the close of this specification. I

In the drawings, Figure 1 is a side elevation of a machine embodying theinvention.

Fig. 2 is a side elevation on a larger scale than Fig. 1 of a portion ofthe mechanism shown above the bed plate, the driving mechanism and someof the frame work unger being ihown in a more elevated position than inFig. 3 is a front shown in Fig. 2.

Fig. 4 is a section on line 4-4 of Fig. 3.

Fig. 5 is a rear elevation showing the clutch operating mechanism.

Fig. 6 is a plan view of the flap folding elevation of the partsmechanism which is below the platen.

Fig. 7 isa plan view of the rotary carrier which positions the boxes toreceive the lining and also of the delivering and transferringmechanism.

Fig. 8 is a sectional view of the forming block.

Fig. 9 is a anism for the its descent.

Fig. 10 is a detail View showing the lining blank after it has beenturned up against the two broad sides of the plunger and one pair of theside flaps are folded.

Fig. 11 is a view showing the second pair of side flaps folded over thefirst pair of side flaps. Y

Fig. 12 is a view showing the bottom flaps the outer pair of side planview of the guidemechplunger in the latter part of flaps.

Fig. 13 is a diagrammatic view showing the electric wiring andconnections. Referring now to the drawings,

a strip of paper 1 from which 'the lining blanks .fin, or equivalentsubstance, which is capable of being softened on its surface by heatingso that if two layers are placed together and pressure is applied whilethe wax is melted and then they are allowed to cool, said two layerswill firmly adhere together. The strip runs from the roll 2 and passesoff through suitable feed and guide mechanism to a point where a blankof a suitable length is cut from the strip, whence the severed blank istransferred to the mechanism for shaping the lining and inserting it inthe box.

In the form of construction shown, the strip passes between a feed roll3 and loosely mounted presser roll 1, whence it passes between the twoflat guides 5, 6 to a position beneath a cutter 7. Said cutter 7reciprocates vertically so that in its downward stroke it severs thatportion of the strip which projects forward beyond the front end of theguides 5, 6. The severed portion forms a blank A of the requisite lengthfor a single box lining. Before the blank is severed from the strip itsforward end will be gripped between the feed rolls 8, 9 which carry thesevered blank forward between feed tapes 10, 11 which respectively runaround the rolls 12, 13. The upper feed tapes 10 run around a forwardroll 14 and the lower feed tapes 11 run around a forward roll 15. Theupper rolls run in opposite directions from the lower rolls so thattheunder run of the tape 10 and the upper run of the tape 11 will movein the same direction and carry the severed blank along between them.

-Any suitable mechanism may be employed for driving said feed rolls inunison, suitable mechanism therefor being shown in said Patent1,037,005.

The said feed rolls 8, 9 and 12, 13 are of somewhat greater length thanthe width of the strip which forms the blank. Instead of having a singletape 10 and a single tape 11 the full width of the blank there is aseries of narrow tapes 10 parallel with each other and spaced apart fromeach other, and also a series of narrow tapes 11 parallel with andspaced apart from each other so as to support a blank properly atdifferent points in its width, the two tapes which are on either side ofthe middle of both the upper and under series of tapes being spacedapart from each other far enough to allow room for the passage of theforming block or plunger between them.

The lining blank is folded about the plunger 18 which serves as theformer, then is carried by the plunger 18 into the carton. The means forheating the plunger will be described hereinafter. The folding operationis performed at certain stages in the descent of the plunger.

The mechanism for folding the blank about the plunger is similar to thatshown in said Patent No. 1,037,005 and briefly described is as follows:Mounted in the space between the two middle tapes 10 are two parallelrolls 19 spaced apart from each other sufficiently to allow the passageof the plunger between them. After the blank has been positioned onthetapes 1011 centrally over the space between the rolls 19 the plunger 18descends, its bottom engaging the lining blank, and carrying it downbetween the two rolls 19 as shown in Fig.

This causes the blank to be folded up against the two opposite sides ofthe plunger in substantially U-shape, the blank being wider than theplunger so that it extends beyond the edges of the plunger on bothsides. The plunger with the blank thus turned up against the twoopposite sides descends farther and passes between the two vertical flatguide plates 20. After the plunger with the lining thus folded againstits sides has passed down between the guide plates 20 a sufficientdistance it stops long enough for the side wings to be folded. The blankbeing of greater width than the plunger, when the blank is turned upinto the U-shape already described, the portion 181 which is turned upagainst one side of the plunger will have; on each side, a laterallyextending portionor wing 182 and the portion 183 which is turned upagainst the opposite side of the plunger will have laterally extendingportions or wings 184. The wings 182 are first turned in against the twoopposite sides of the plunger at right angles to the middle portion 181as shown in Fig. 10 by means of the vertical folder plates 21 shown inFig. 6. The folder plates 21 are each formed with a foot 211 whichengage the side wings I) to form triangular folds at the bottom andpress them down against die supporting plates 213. Then the other pairof side wings, 184, are folded in from the opposite side so as tooverlap the wings b, by means of another pair of vertical folder plates22 shown in Fig. 6, which swing in from the side opposite to the folderplates 21, thus leaving the blank in the position shown in Fig. 11, withthe triangular horizontal projecting double fold 185 at the bottom ofeach of two opposite edges of the plunger. The folder plates 21 areactuated by the rocker shaft 212 and intermediate connections, and thefolder plates 22 are actuated by the rocker shaft 221 and intermediateconnections. The farther descent of the plunger carries it down betweentwo parallel rolls 23 which engage the horizontally projectingtriangular flaps g and fold them up against the outside of the sideflaps as shown in Fig. 12.

'is driven by a pulley 69.

arness The tape roll 13 is mounted on a shaft 25 on which is mountedalso a pulley 26. Roll 15 is mounted on shaft 27 on which is alsomounted a pulley 28. A pulley 29 is mounted on a shaft 30. A belt 31passes around the pulleys 26, 28, and 29, thus positively driving thetape rolls l3 and 15. A gear wheel mounted on shaft 25 which carries thetape roll 13 engages with a gear wheel on the shaft which carries thetape roll 12 thus driving said tape roll 12. Said gear wheels aremounted on the opposite ends of the shafts from that shown in Fig. l andare not shown in the drawings because they form no part of the presentinvention. Shaft 42 carries a beveled gear 43 which engages with abeveled gear 44 mounted on shaft 45. Said shaft 45 carries a beveledgear 46' which meshes with a beveled gear 47 on shaft 48. Said shaft 48carries a sprocket wheel 49 around which passes a sprocket chain 50which also passes around a sprocket 51 on the shaft 30. Mounted on saidshaft 30 is a gear wheel 66 which engages with a pinion 67 on shaft 68which Said pulley 69 is driven by any suitable power. It is loose onshaft 68 but may be put into driving connection therewith by'a clutch 70actuated by a lever 71 fulcrumed at 72 and 0perated by a slidable handrod 73. See Figs. 1 and 5.

The plunger 18 is rigidly connected with the lower end of a verticalplunger rod 52 whose upper end is connected with the lower side of across head 53 which is slidable in guide ways in the upright portions 54of the frame. A lever 55 is pivotally connected at one end with thecross head 53 by means of a link 57, said link 57 having a looseconnection with a pin 58 mounted on said lever 55 and having also aloose connection with a pin 59 mounted on the cross head so that byrocking the said lever 55 on a horizontal axis said cross head 53 may bemoved up and down in a straight line in its guide ways, therebyreciprocating the plunger 18.

The mechanism for rocking the said lever 55 is as fo-llows:-Said leveris fulcrumed at its rear end on a stud 60 projecting from the frame andcarries intermediate its ends a roll 61 which engages with a cam groove62 in the side of-the gear wheel 66.

In order to counterbalance in part the weight of the plunger so thatless power will be required to lift the plunger '01 so that there willbe less strain on the cam, one end of a sprocket chain 63 is connectedwith said lever 55 between the fulcrum point 60' and the connection withthe'cross head, said chain running up over a wheel 64, 'and its otherend being connected with one end of a spring 65, the other end of saidspringbeing secured to a hook 66 rigidly connected with the frame. Whenthe plunger descends and the lever 55 rocks down, the spring 66 will beput under tension, and when the lever is ready to rock back in the otherdirection the contraction of the spring will pull up on said lever,aiding to lift the plunger and help take the strain off of the cam. a

The plunger or former 18 as already stated is composed of metal or someother heat retaining and heat conducting material and any suitable meansare provided for heating it. The preferred method is to heat it byelectricity. In the form of construction shown in the drawings theplunger is provided with the two heating irons 74, 7 4. These ironheaters transmit heat to the body of the plunger 18. Connected with theirons 74 are the positive and negative wires 76, 77 the wire 76 leadingthrough the cross head53 and thence to a switch 7 8.

The wire 77 passes up through a rheostat 79 and thence to the switch 78. The switch 78 is connected by wires 761 and 771 to any suitablesource of electric supply.

Inasmuch as the cross head 53 is vertically reciprocable, in order tocarry the plunger up and down, the electric connection through the crosshead must be such as to be adapted to this reciprocable movement of thecross head. Secured to the upright portion of the frame in which thecross head slides is a block 80 of insulating material formed with twovertical grooves. In the bottom of the said grooves respec tively arethe two contact plates 775 and 765. Mounted on and forming the upperpart of the cross head is a block 82 which is apertured horizontally toreceive the pins 773 and 763 respectively to which are securedrespectively the wires 77 and 76. The pin 773 carries a brush 774 atitsopposite end from that to which the wire 77 is secured, and the pin763 carries a brush 764.

The brushes are kept in yielding contact.

with the plates by springs 85, 86. As the plunger moves up and down saidbrushes 774 and 764 move in contact with said con- .tact plates 775 and765. The contact plate A branch wire 778 leads from the wire 776 beforeit enters the rheostat 79 and is connected at its ends with the contactpoint 779' which is adapted to be connected by means of a switch 780with a wire 781 leading to the rheostat.

When the switch 780 is open, theswitch 78 being closed, the circuit willbe through the entire resistance coil ofthe rheostat, but .when theswitch 780 is closed the current I is closed. \Vhen it is desired totemporarily stop the machine it is important to have the heat reducedsomewhat so as not to overheat the irons, and in order to do that theswitch 780 is opened so as to throw the current through the entirelength of the resistance coil. In order to make sure that the switch isthus opened whenever the machine is stopped temporarily and to providefor any carelessness on the part of the workmen in neglecting to openthe switch, means are provided whereby the throwing of the clutch tostop the machine will also open the switch. a As already stated, theclutch 70 is operated through the lever 71 and rod 73. Inclosed in a box91-is'a standard type of push button switch represented by 780 in thediagram, Fig. 13, having a push button 92 to close the circuit and apush button 93 to open the circuit through the Wires 778 and 781. Thebutton 92 is en aged by a lever 94, fulcrumed at 95. Said lever 94 p isengaged by a hook 83 mounted on rod 73.

The push button 93 is engaged by a slide 96 which in turn is engaged byone arm of a bell crank lever 97 whose other arm has a link connectionwith lever 94. When the said rod 73 is moved in the direction to closethe clutch it will also turn the lever 94 in a direction to push in thebutton 92, thus closing the circuit through the wire 781, and when therod 73 is moved in the direction to disengage the clutch and stop themachine the lever 94 will be turned so that the bell crank 97 willactuate the push button 93 to open the circuit through the switch 780and cause the current to pass through the entire length of theresistance coil in the rheostat.

The object of having the current automatically reduced when'the machineis temporarily stopped is because if the full current is on while themachine is not in operation the heat will increase and heat the formerto such an extent that even if the throwing the clutch into engagementwith the driving pulley.

When the plunger passes down between the two rolls 23, 23 which fold thetriangu lar portions turned up from the-bottom as already described, thewax in the paper already being softened, the pressure of these rolls 23will be applied not only to the said triangular flat portions but alsoapplied to the full length of the overlapping side portions of thelining, thus causing an adhesion between the said overlapping portions.

After passing between the rolls 23, 23 the plunger in its furtherdescent passes down between the vertical guides 90, said guidespreferably being four in number arranged to form a hollow, square, saidguides being right angled in cross section as shown in Fig. 9 so as toengage the four corners of the plunger with the lining wrapped aroundit, and these guides keep the overlapping portions from springing apartfrom each other while the block is descending from the folding levelinto the box.

Itis characteristic of waxed or paraflined paper of the kind describedand used in carrying out this invention that when two portions overlapeach other whilethe wax is in a melted or softened condition and slightpressure is applied, the overlapping portions will adhere together andwill not adhere to the forming block, hence, when the plunger rises inthe continued operation of the machine after the plunger has carried thelining into the carton, it will slip out of the lining.

The cartons may be presented and positioned in any suitable way toreceive the plunger or former with the lining blank completely foldedand sealed. One-form of mechanism for thus presenting and positioningthe cartons is fully described in said Patent No. 1,037,005 and it isnot deemed necessary to again describe it in detail.

Briefly, it is as follows: A continuously driven belt 101 brings thecarton to a rotary carrying mechanism or spider 102 which period ofrotation.

The spider is formed with four radiating arms 104 each carryin a pocket105 to receive a carton from t e belt 101. spider rotates, the cartonwill be carried from the station a where it receives the carton from thebelt through 90 to station 6' As the I beneath the plunger, ready toreceive the plunger with the. lining wrapped around it. It comes intothis position during the movement of the plunger so as to be there atthe proper time.

After the lining has been inserted while the carton is at the station I)and the plunger has withdrawn, the spider will make another one quarterturn carrying the carton 1 with the inclosed lining around to the thirdstation indicated by c and delivered onto the belt 101 which will removethe carton to a suitable place of delivery.

While We have described the invention as applied to a machine in whichthe forming block is heated, we desire it to be understood that that isonly one form of mechanism in which our invention may be embodied. Ourinvention consists, broadly, in the making of a lining for a box out ofpaper having a coating of wax or the like, by shaping the blank into aform to fit the interior of the box, with overlapping portions to formjoints, and heating the wax or like preparation in the papersufliciently .to melt or soften the wax, and positively causing theoverlapping portions at the joints to remain 1n contact with each othera sufficient length into and out of of time for the contacting waxsurfaces to adhere together; and it is our purpose that the claims shallbe construed as sufficiently broad to cover any mechanism foraccomplishing the above result.

What we claim is:

1. In a machine for lining boxes, a former, means for folding a blankabout the former to form a lining for a box, means for moving theformerwith the lining formed thereon into the box, means for applying tothe former a heating medium during the operation of the machine, drivingmechanism, means for putting the driving mechanism operative connectionwith the folding and former actuating mechanism and means whereby thedisengagement of the driving mechanism from the folding and formeractuating mechanism automatically reduces the heat applying mediumWithout completely cutting off the same.

2. In a machine for lining boxes, a former, means for reciprocating theformer, means for folding a lining blank about the former,

\ means for applying a heating medium to the former, means for drivingboth the former and the folder, means to engage and disengage saiddriving mechanism with relation to said former actuating and folderactuating mechanism and means whereby the disengagement of the drivingmechanism reduces the heat applying medium without entirely cutting olfthe same, and whereby the engagement of the driving mechanism causes anincrease in the heat applying medium.

3. In a machine for lining boxes, a former, means for reciprocating theformer, means for folding alining blank about the former, means forapplyinga heating medium to the former, means for driving both theformer and the folder, means to engage and disengage said drivingmechanism with relation to said former actuating and folder actuatingmechanism and means whereby the dis engagement of the driving mechanismreduces the heat applying medium and whereby the engagement of thedriving mechanism causes an increase in the heat applying medium.

4. In a machine for lining boxes, a former, means for folding a blankabout the former to form a lining for a box, means for moving the formerwith the lining thereon into the box, an electric circuit includingtherein a heater connected with said former, a resistance coil in saidcircuit, a shunt circuit through which the current may be made to passthrough a portion only of said resistance coil, driving mechanism,clutch mechanism for connecting the driving mechanism with the formeractuating mechanism, means for moving the clutch into and out ofengagement with the folder actuating and former actuating mechanism, aswitch connected with said electric circuit and means actuated by theclutch actuating mechanism whereby when the clutch mechanism is movedinto engagement with the folder'actuating and former actuating mechanismthe said switch is turned to make the electric circuit through the shuntand thereby through only a portion of the coil, and whereby when theclutch is disengaged the said switch is thrown so as to makethe circuitthrough the entire resistance coil and thereby reduce the amount of heatapplied to the said former.

5. In a machine for lining boxes, a former, means for applying a heatingmedium to the former, means for folding a blank about the former toshape the lining, driving mechanism for actuating thefolding mechanism,means for putting the driving mechanism into and out of operativeconnection with the folding mechanism and means whereby thedisengagement of the driving mechanism from the folding mechanismreduces the heat applying medium.

6. In a machine for lining boxes, a former, an electric heater for theformer, means for folding a blank about the former to shape the lining,driving mechanism, clutch mechanism for connecting said drivingmechanism with the folder actuating mechanism, means for actuating saidclutch to engage and disengage the driving mechanism with relation tothe folder mechanism, and means actuated by said clutch actuatingmechanism to vary the electric current through the heater whereby thecurrent is reduced when the clutch is disengaged.

an electric heater for the former, means for folding a blank about theformer to shape the lining, driving mechanism, clutch mechanism forconnecting said driving mechanism with the folder actuating mechanism,means for actuating said clutch to engage and disengage the drivingmechanism with relation to the folder mechanism, an electric circuitthrough the former having a resistance coil therein, means actuated bysaid clutch actuated mechanism whereby when the clutch is thrown todisengage the driving mechanism the current will be made to pass throughthe entire resistance coil and when the clutch is thrown into engagementthe current will be caused to pass through only a part of the resistancecoil, and means under the control of the operator to at will entirelycut off the electric current or to turn the current through the heaterindependently of the clutch actuating mechanism and while the clutchisdisengaged.

8. In combination with driving mechanism, driven mechanism, clutchmechanism for connecting said driving mechanism with said drivenmechanism, a main electric circuit, a resistance coil in said circuit, ashunt circuit by which the current may be made to pass through a portiononly of said resistance coil, means for moving the clutch into and-outof engagement with said driven mechanism, a switch connected with saidelectric circuit, and means actuated by the clutch actuating mechanismwhereby when the clutch mechanism is moved to connect the said drivingmechanism with the said driven mechanism the said switch is turned tomake the electric circuit through the shunt and thereby through only aportion of the resistance coil, and whereby when the clutch 'isdisengaged the said switch is thrown so as to make the circuit throughthe entire resistance coil.

In testimony whereof we afiix our signatures, in presence of twowitnesses.

WILLIAM H. DOBLE. GEORGE A. ROBINSON. Witnesses:

ELIZABETH HIGGINS, E'rnYL W. MATI'IESON.

